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Progressive Suspension 412 Black 12" Heavy Duty Shocks

J&P Cycles Part Number: 700-640

Manufacturer Part Number: 412-4069B

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Description for Progressive Suspension 412 Black 12" Heavy Duty Shocks

• High-performance gas cells

• Double-wall construction

• 6-stage dampening

• Heat-treated hard-chrome rods, long life seals and fade resistant oil

• backed by a one-year limited warranty

• special cam adjusters permit easy pre-load adjustment

Product Specs

Product Specs for Progressive Suspension 412 Black 12" Heavy Duty Shocks

Manufacturer Part Number:
Shock Length:
Shock Style:
Gas Filled
Sold in Units:
Standard or Heavy Duty:
Heavy Duty
Warehouse Part Number:
Fitment Questions?

With over 750 years of experience combined, our tech staff has the answers!

Compatible Models

Harley-Davidson® Models

  • Sportster 1200 50th Anniversary XL50 : 2007
  • Sportster 1200 Custom Anniversary XL1200C : 2013
  • Sportster 1200 Custom XL1200C : 2004–2017
  • Sportster 1200 Custom XL1200CA : 2013–2016
  • Sportster 1200 Custom XL1200CB : 2012–2017
  • Sportster 1200 Custom XL1200CP : 2011–2016
  • Sportster 1200 Forty-Eight XL1200X : 2010–2017
  • Sportster 1200 Low XL1200L : 2006–2011
  • Sportster 1200 Nightster XL1200N : 2007–2012
  • Sportster 1200 Roadster XL1200CX : 2016–2017
  • Sportster 1200 Roadster XL1200R : 2004–2009
  • Sportster 1200 Seventy-Two XL1200V : 2012–2016
  • Sportster 1200 SuperLow XL1200T : 2014–2017
  • Sportster 883 Custom XL883C : 2004–2010
  • Sportster 883 Iron XL883N : 2009–2017
  • Sportster 883 Low XL883L : 2005–2010
  • Sportster 883 Roadster XL883R : 2005–2015
  • Sportster 883 Standard XL883 : 2004–2009
  • Sportster 883 SuperLow XL883L : 2011–2017
  • Sportster XR1200 : 2008–2010
  • Sportster XR1200X : 2010–2012
Customer Reviews

Customer Reviews for Progressive Suspension 412 Black 12" Heavy Duty Shocks

Overall Rating

5 out of 5 stars (based on 20 reviews)

5 stars (17)

4 stars (3)

3 stars (0)

2 stars (0)

1 star (0)

0 stars (0)


fantastic shocks. love the ride and the look. Super easy to install with a lift.


Got rid of my stock air ride to get these shocks. A big improvement over stock. Can adjust for single or double up touring in just a few seconds. Should have bought these sooner!


Excellent ride and comfort


Great for the black out look. Not alot of difference from factory, but great quality.


Easy install. Nice look. Good ride.


These are even better than I expected!


Good looking shocks with decent rebound. Was happy with the purchase and the price. Remember to order the black, top bolt covers as they don't come with them.


Much better than the stock ones.


Look great. Ride nice.


They look great, provide a smooth ride and adjust easily - a winner for me.


Great shocks. I'm 200lbs and the ride is perfect. When my wife rides I don't have to adjust the preload and the bike handles perfect. I also replaced the front springs with the Progressive ones. I recommend doing them both.

Tyler Seprodi

When you 2 up a lot the shocks are great rides so much better they look really good to


The shocks where purchased to lower a 2000 Harley Road King for my wife. The shocks accomplished this task and provided a better ride and handling over the stock air shocks.


I needed heavier springs.


improved ride right out of the box ,i put them on 2000 police road king


Awesome, everything I hoped it would be!


cushy ride for sure now! easy to install


no issues


Easy to install. Improved the ride.


Great product! Fit my 1995 Sportster 1200 like a charm. With help from a friend, I was able to change these shocks with a car jack!

Important Product Notes

Note: When shocks are shorter than stock, clearance must be carefully checked for potentially dangerous interference.

Note: Standard Duty shocks are for ride loads under 250 lbs., Heavy Duty shocks are for ride loads regularly over 250 lbs.

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